Mixing device



v G. J. MCCARTHY Oct 13,

MIXING DEVICE Filed Dec. l. 1924 e aJw/f@ ,g1/wanton SH01 wat Patented Oct. 13, 1925.

lUNIT-ED STATES 1,557,261 PATENT oFFlcE.

GILBERT J'. MCCRTHY, 0F WASHINGTON. DISTRICT O-F COLUMBIA.

MIXING DEVICE. l

Application led December To ZZ 'whom z't lmm/ concern.'

Y' Be it -lrnown that I,- Grnnnn'r J. Mo- CARTHY. a citizen of the United States, residing at. 'Washington` in the District of Columbia. have invented certain new and useful Improvements in Mixing Devices, of which the following is a specification.

This invention relates-to mixing devices, adapted to be applied in the intake of an internal combustion engine, for thoroughly intermixing the gases leaving the carburetor before thesame enter the combustion chamberof the engine.

An object of the invention is to provide a device of the above mentioned character, including a plurality of rotatable members adapted to rotate in opposite direct-ions. rotatably mounted on independent bearing members and having a substantially large bearing surface thereon. and means for mounting the bearing members in axially aligned relation on a suitable plate member. in order to form a relativelv simple and yeteiicient structure which .will have a lona" life of operation. and can be manufactured at a relativelv low cost. at the same, time efticientlv performing its function.

Another obiectlv of the invention is to provide a device including relativelv few parts. which may each bemanufactured bv a relativelv simple operation. and which may be eaqilv assembled into operative positions to provide an eiiiciently operable device, at a small cost.

I The invention also includes other objects and improvementsivfl the details of construction and arrangement of the parts as will he more particularlv pointed out in the following description and claims. directed to the preferred form of the invention. it being understood. however. that various changes in the details of construction ofthe parts and the manner of assembling the same mav be made. without departing from the spirit and scope of this invention. as described and claimed.

In the drawing, forming a part of this application:

vFigure 1 illustrates a plan view of a portion of a carburetor. and the attached intake manifold of an internal combustion engine, with the invention secured in place. portions being shown in section. l

Figure 2 'is avertical sectional view, through the mixing device.

Figure 3 is a view of one of the impellers.

1, 1924. senin No. 753,233.

Figure 4 is a view of the plate member. Figure 5 1s a perspectwe vlew ofvoneof the bearing members.

A carburetor is indicated at 1, of the usual type used in connection with internal combustion engines, and particularly the type of internal combustion engine used on automobiles, which has a anged outlet at -2, to which is secured the fiange of the intake manifold 4. by the usual'bolt Aand nut connections 5. Gasket members 6 may be interposed between the flanges 2 and 3 in order. to provide an air tight and liquid tight joint. in the usual' manner. The mixer, forming the subject matter of this invention, includes the plate member 7, illustrated in detail, in Figure 4, which is of elongated shape corresponding with the fianges 2 and 3, andy which is provided with a central opening 8 and a plurality of concentrically arranged segmental openings 9. adapted to register with the passage through the outlet of the carburetor and the intake manifold 4. to permit the usual iow of vapor therethrough. The end portions of the plate member 7 are provided with openings 10,

to receivethe usual securing bolts 5, whichv assemble the intake manifold and the carburetor outl'et.

A plurality of bearing members are indicated a't 11. which include a sleeve portion 12, provided with an annular projecting flange 13, at one end thereof, as clearly shown in Figures 2 and 5. An impeller 14. is adapted for rotatable mounting on the tubular portion 12 of each bearing member, and for this purpose-is provided with a hub portion 15. of a size to substantially accurately t and provide an accurate bearing for the impeller on the tubular portion 12 of said bearing member. 'a pluralitfof blades 16 projecting radially from the hubx portion 15. The hub portion 15 is of a length slightly less than the length ofthe tubular portion 12, in order that la plurality of bearing members may be assembled, as indicated in Figures 1 and 2, in rigid contact with one another, While the impellers 14 will be free to rotate on its respective bearing member. A plurality ofl impellers are illustrated in Figures 1 and 2, with the blades of alternate impellers arranged at an opposite inclination to the intermediate impellers, in order that adjacent impellers will rotate in opposite directions. The rod member or assembling member is indicated at 17, in

alignment with openings 8 therein. In this assembled relation, the ends of the rod or assembling member 17 lare overturned to provide rivet heads 18, for rigidly assembling the parts in operative relation.

In this assembly, it will be noted that the flanges 13 of each of thc bearing members are arranged to cooperate with the free end of the tubular portion 12 of the adjacent bearing member, in order to provide a proper cooperation between adjacent bearing members for properly retaining the impellers 14 in 'rotatable relation on each of the tubular portions 12. The provision of a structure of this character, Will form a device which is eiicient in operation, and one which may be assembled in a single operation, in a suitable form of machine, Without danger of impairing the free rotation of Vthe impeller members 14 by reason of the fact that the hub portion 15 of the impellers is shorter in length than the tubular` portion 12 of the bearing members permitting each ofthe bearing members to abut its adjacent bearing member in assembled relation, so that a rigid assemblage may be made with the plate if and yet the impellers retained on the tubular portions 12 in a freely rotatable manner. The periphery of the flange 13 is of a diameter substantially the same as the periphery of the hub portion 15 of the impellers, in order to provlde a substantially smooth exterior surface, which will not interfere with the passage of gas and vapors through the intake manifold,

While the impeller blades 14 of the several impellers rotating in opposite directions will effectively break up the liquid gasoline or other fuel being drawn through the intake manifold which will provide a completely vaporized mixture for intake into the combustion chamber of an internal combustion engine. By breaking up the liquid portions drawn into the intake manifold by the suc- -tion of the engine into a highly vaporized mixture, the completeness of the combustion in the chamber is increased and the efficiency of operation also correspondingly increased. Another advantage obtained by the use'of a device of this character is the increased mileage resulting from the use of the device .and increasing the eiicienc-y of operation of the engine, as the proportion of fuel fedto the intake manifold by the carburetor can be substantially reduced, in view of the use of the mixing device, for highly intermixing the. fuel with the air. The rovision of the bearing members 12 provides a bearing surface for the impellers 14 of a maximum size, in order to increase the life of the device, and reduce the amount of wear on the bearing surfaces. The provision of independent bearing members also permits the use of any desired number yof impeller blades as may be found desirable for the different types of internal combustion engines, with which the device may be used, and permits of the construction of a substantially high grade bearing member, in a device manufactured at a low cost, in view of the fact that the relatively small amount of material required for making each bearing member and in the simplicity of structure thereof, thereby providing a'device of higher qualities and longer life.

In addition, each ofthe parts are of simple construction, and may be assembled in a stamping or pumping machine by using an ordinary rod member for assembling the bearing members in axially aligned relation, and having the end portions in engagement, the ends of the rod member being `overturned, as indicated at 18, to form rivet heads in assemblingthe several parts in rigid connection with each other. It will thus be seen that a construction of mixing device has been provided, wherein the parts are o f relatively simple construction and of a character that the assembled device may be manufactured at a small cost.

Further, the invention eliminates or substantially reduces the formation of carbon in the cylinders' and the flow of liquid fuel into the cylinders thus delivering a complete gaseous mixture for combustion which does not form carbon. It will therefore be apparent that the thinning of the crank case oil` by the fuel is substantially eliminated and with the substantial elimination of carbon the eiiciency of operation of the internal combustion engine equipped with this invention is materially increased and the requirement for valve grinding usually hecessary` at frequent periods also materially reduced.

What is claimed is:

1. A mixer comprising a plate member-hav- Y ing a central opening, and a plurality of segmental openings arranged concentrically to the central opening, a plurality of bearing members, and an impeller for each bearing member rotatably mounted thereon, and assembling means for securing said bearing members in rigid aligned relation to veach other and to the plate member in alignment with the central opening thereof. 2. A mixer comprising a plate member having a central opening; and a plurality of segmental openings arranged concentrically to the central opening, a plurality of tubular bearing members, an impeller for each bearing member rotatably mounted thereon, and an assembling rod extending through `the bearing members and the central opening of the plate member, and formed with heads on the opposite ends thereof for assembling the bearing members in rigid Contact with each other and with the plate njlelnber, in axially aligned relation.

3. A mixing device comprising a plate member having a central Opening and a plurality of segmental openings arranged eoneentrioally tothe central opening, a plural ity of bearing members having tubular portions formed with annular outwardly extending flangesat one end, an impeller for each bearing member rotatably mounted on the tubular portion thereof and having a hub portion forming the rotatable mountlng for the impeller, of a length slightly less than the length of the tubular portion of the bearing member, and an assembling rod extended through the tubular portions of the bearing members and the central opening ot the plate member and formed With headed ends for rigidly assembling said bearing members in aligned relation with each other and tothe plate member.

In testimony whereof I aix my signature.

GILBERT J. MGCARTHY. 

